We've been using kannel for a very long time, sending messages with the default coding value of 0. We just received a complaint that underscore characters are not appearing in messages which I believe is a known issue with the GSM7 charset.
I am trying to understand the impact of moving from a coding value of 0 to 1. The way our platform is configured, this would be a global change for all messages we send (our application does not know about the coding parameter, we'd have to hard code it into the URL for all kannel requests). Is there any risk of using coding=1 for all messages? Are there some handsets out there that will not be able to view the messages if the coding =1 ? Thanks, Jeff